Narrative:

On takeoff roll above 80 KTS I realized that the left pack was not working. Continued on to (destination). On the ground at destination maintenance informed me that the left pack was indeed inoperative due to the pack valve having been disconnected.

Google
 

Original NASA ASRS Text

Title: A B737-800 FLT CREW NOTICED L PACK INOP ON TKOF ROLL. FLT CONTINUED TO DEST.

Narrative: ON TKOF ROLL ABOVE 80 KTS I REALIZED THAT THE L PACK WAS NOT WORKING. CONTINUED ON TO (DEST). ON THE GND AT DEST MAINT INFORMED ME THAT THE L PACK WAS INDEED INOP DUE TO THE PACK VALVE HAVING BEEN DISCONNECTED.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.